Example #1
0
        private async void ScaleRainbowButton_Click(object sender, RoutedEventArgs e)
        {
            SoftwareBitmap tempSB;
            double         scale = DisplayInformation.GetForCurrentView().RawPixelsPerViewPixel;

            int renderTB_Width  = 200;
            int renderTB_Height = 100;
            int newWidth        = g704_softwareBitmap.PixelWidth;
            int newHeight       = g704_softwareBitmap.PixelHeight;

            // Step 1 :
            // Create RenderTargetBitmap by ColorRectangle.
            // Don't worry about both width and height of ColorRectangle.
            RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap();

            ColorRectangle.Fill = MyColorHelper.GetRainbowBrush();
            await renderTargetBitmap.RenderAsync(ColorRectangle, renderTB_Width, renderTB_Height);

            // Step 2 :
            // Get IBuffer from RenderTargetBitmap,
            IBuffer ib = await renderTargetBitmap.GetPixelsAsync();

            // Step 3 :
            // Create a temporary SoftwareBitmap which is based on current scale
            tempSB = SoftwareBitmap.CreateCopyFromBuffer(ib, BitmapPixelFormat.Bgra8,
                                                         (int)(renderTB_Width * scale), (int)(renderTB_Height * scale));
            tempSB = SoftwareBitmap.Convert(tempSB, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);

            // Step 4 :
            // Adjust to the same size as g704 image
            tempSB = Resize(tempSB, newWidth, newHeight);

            // Step 5 :
            // Assign this temp image pixels to g704 image
            g704_softwareBitmap = SoftwareBitmap.Convert(g704_softwareBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight);
            AssignPixelValues(g704_softwareBitmap, tempSB);
            g704_softwareBitmap = SoftwareBitmap.Convert(g704_softwareBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);

            var source = new SoftwareBitmapSource();
            await source.SetBitmapAsync(g704_softwareBitmap);

            G704.Source = source;
        }
Example #2
0
        private async void RainbowButton_Click(object sender, RoutedEventArgs e)
        {
            int width  = g704_softwareBitmap.PixelWidth;
            int height = g704_softwareBitmap.PixelHeight;

            RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap();

            ColorRectangle.Fill = MyColorHelper.GetRainbowBrush();
            await renderTargetBitmap.RenderAsync(ColorRectangle, width, height);

            g704_softwareBitmap = SoftwareBitmap.Convert(g704_softwareBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight);
            IBuffer ib = await renderTargetBitmap.GetPixelsAsync();

            byte[] pixel_array = ib.ToArray();
            ApplyRainbow(g704_softwareBitmap, pixel_array);
            g704_softwareBitmap = SoftwareBitmap.Convert(g704_softwareBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);

            var source = new SoftwareBitmapSource();
            await source.SetBitmapAsync(g704_softwareBitmap);

            G704.Source = source;
        }